septeven : do you have a easy way to activate CORS on your webserver ?
I don't think so.
In fact, It's not specially about csv, but I need to load and write in a txt file (or other text format) from a local app (iphone) to a file hosted online (on a ftp, or dropbox, or others).
Any ideas ?
septeven : you can use XHR2 instead of XHR only. I know that XMLHttpRequest Level 2 allows for cross domain exchange. However, I suppose that the Ajax calls made by C2 are XHR1 only. Either ask Ashley, or you need to create a small plugin <img src="smileys/smiley2.gif" border="0" align="middle" />.
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I'll see this.
Besides, I figured it out with AJAX and PHP.